Wuling b 12 Engine Throttle Gas Spitting at 3000 rpm.

Find the reasons from three aspects: oil circuit, circuit and exhaust.

Exhaust: after driving for a period of time, it is best to open the nose mask to darken the color. Observe whether the exhaust pipe is red or not, and suspect that the exhaust system is blocked.

Circuit: disassemble the spark plug to see if there is serious blackening; Observe whether the high voltage package circuit is open.

Oil circuit: disconnect the oil supply pipe on the engine side, connect the hydraulic gauge, and then try to start it. Normal oil pressure is about 3 kg. If there is no hydraulic gauge, the tubing will start to spray elsewhere to see if there is any sudden spray. If the pressure is ok, it depends on whether the rubber tube of the oil supply system on the engine side is broken. Generally, there is a vacuum tube next to the tubing; If there is no problem, remove the fuel injector and clean it with carburetor cleaner. If there is a problem with the pressure, it depends on how long the gas tank has not been changed. If the oil tank hasn't been changed for ten or twenty thousand kilometers, there is something wrong with the oil pump.